Soldering pencil holder base



FIG. 1 is a left, top and front perspective view of a soldering pencil holder base showing my new design;

FIG. 2 is a left side elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a right side elevational view; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a soldering pencil holder base, as shown and described. 